kotlin/recyclerview-adapters

recyclerview-adapters/src/main/AndroidManifest.xml

@@ -1,2 +1,2 @@
 <manifest
-    package="ru.touchin.adapters"/>
+    package="ru.touchin.roboswag.recyclerview_adapters"/>

recyclerview-adapters/src/main/java/ru/touchin/adapters/AdapterDelegate.java → recyclerview-adapters/src/main/java/ru/touchin/roboswag/recyclerview_adapters/AdapterDelegate.kt

@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2017 RoboSwag (Gavriil Sitnikov, Vsevolod Ivanov)
+ *  Copyright (c) 2019 RoboSwag (Gavriil Sitnikov, Vsevolod Ivanov)
  *
  *  This file is part of RoboSwag library.
  *
@@ -17,33 +17,26 @@
  *
  */
 
-package ru.touchin.adapters;
+package ru.touchin.roboswag.recyclerview_adapters
 
-import androidx.annotation.NonNull;
-import androidx.core.view.ViewCompat;
-import androidx.recyclerview.widget.RecyclerView;
-import android.view.ViewGroup;
-
-import java.util.List;
+import androidx.core.view.ViewCompat
+import androidx.recyclerview.widget.RecyclerView
+import android.view.ViewGroup
 
 /**
  * Objects of such class controls creation and binding of specific type of RecyclerView's ViewHolders.
- * Default {@link #getItemViewType} is generating on construction of object.
+ * Default [.getItemViewType] is generating on construction of object.
  *
- * @param <TViewHolder> Type of {@link RecyclerView.ViewHolder} of delegate.
- */
-public abstract class AdapterDelegate<TViewHolder extends RecyclerView.ViewHolder> {
-
-    private final int defaultItemViewType = ViewCompat.generateViewId();
+ * @param <TViewHolder> Type of [RecyclerView.ViewHolder] of delegate.
+</TViewHolder> */
+abstract class AdapterDelegate<TViewHolder : RecyclerView.ViewHolder> {
 
     /**
      * Unique ID of AdapterDelegate.
      *
      * @return Unique ID.
      */
-    public int getItemViewType() {
-        return defaultItemViewType;
-    }
+    val itemViewType = ViewCompat.generateViewId()
 
     /**
      * Returns if object is processable by this delegate.
@@ -53,7 +46,7 @@ public int getItemViewType() {
      * @param collectionPosition     Position of item in collection;
      * @return True if item is processable by this delegate.
      */
-    public abstract boolean isForViewType(@NonNull final List<Object> items, final int adapterPosition, final int collectionPosition);
+    abstract fun isForViewType(items: List<*>, adapterPosition: Int, collectionPosition: Int): Boolean
 
     /**
      * Returns unique ID of item to support stable ID's logic of RecyclerView's adapter.
@@ -63,18 +56,15 @@ public int getItemViewType() {
      * @param collectionPosition   Position of item in collection;
      * @return Unique item ID.
      */
-    public long getItemId(@NonNull final List<Object> items, final int adapterPosition, final int collectionPosition) {
-        return 0;
-    }
+    open fun getItemId(items: List<*>, adapterPosition: Int, collectionPosition: Int): Long = 0
 
     /**
      * Creates ViewHolder to bind item to it later.
      *
      * @param parent Container of ViewHolder's view.
      * @return New ViewHolder.
      */
-    @NonNull
-    public abstract TViewHolder onCreateViewHolder(@NonNull final ViewGroup parent);
+    abstract fun onCreateViewHolder(parent: ViewGroup): TViewHolder
 
     /**
      * Binds item to created by this object ViewHolder.
@@ -85,12 +75,12 @@ public long getItemId(@NonNull final List<Object> items, final int adapterPositi
      * @param collectionPosition   Position of item in collection that contains item;
      * @param payloads             Payloads;
      */
-    public abstract void onBindViewHolder(
-            @NonNull final RecyclerView.ViewHolder holder,
-            @NonNull final List<Object> items,
-            final int adapterPosition,
-            final int collectionPosition,
-            @NonNull final List<Object> payloads
-    );
+    abstract fun onBindViewHolder(
+            holder: RecyclerView.ViewHolder,
+            items: List<*>,
+            adapterPosition: Int,
+            collectionPosition: Int,
+            payloads: List<*>
+    )
 
 }

recyclerview-adapters/src/main/java/ru/touchin/adapters/DelegatesManager.kt → recyclerview-adapters/src/main/java/ru/touchin/roboswag/recyclerview_adapters/DelegatesManager.kt

@@ -1,4 +1,4 @@
-package ru.touchin.adapters
+package ru.touchin.roboswag.recyclerview_adapters
 
 import androidx.recyclerview.widget.RecyclerView
 import android.util.SparseArray

recyclerview-adapters/src/main/java/ru/touchin/adapters/DelegationListAdapter.kt → recyclerview-adapters/src/main/java/ru/touchin/roboswag/recyclerview_adapters/DelegationListAdapter.kt

@@ -1,4 +1,4 @@
-package ru.touchin.adapters
+package ru.touchin.roboswag.recyclerview_adapters
 
 import androidx.recyclerview.widget.AsyncDifferConfig
 import androidx.recyclerview.widget.AsyncListDiffer
@@ -33,7 +33,7 @@ open class DelegationListAdapter<TItem>(config: AsyncDifferConfig<TItem>) : Recy
 
     override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int, payloads: List<Any>) {
         val collectionPosition = getCollectionPosition(position)
-        if (collectionPosition in 0 until getList().size) {
+        if (collectionPosition in getList().indices) {
             if (itemClickListener != null) {
                 holder.itemView.setOnRippleClickListener {
                     itemClickListener?.invoke(getList()[getCollectionPosition(holder.adapterPosition)], holder)

recyclerview-adapters/src/main/java/ru/touchin/roboswag/recyclerview_adapters/ItemAdapterDelegate.kt

@@ -0,0 +1,74 @@
+package ru.touchin.roboswag.recyclerview_adapters
+
+import androidx.recyclerview.widget.RecyclerView
+
+/**
+ * Objects of such class controls creation and binding of specific type of RecyclerView's ViewHolders.
+ * Such delegates are creating and binding ViewHolders for specific items.
+ * Default [.getItemViewType] is generating on construction of object.
+ *
+ * @param <TViewHolder> Type of [RecyclerView.ViewHolder] of delegate;
+ * @param <TItem>       Type of items to bind to [RecyclerView.ViewHolder]s.
+</TItem></TViewHolder> */
+abstract class ItemAdapterDelegate<TViewHolder : RecyclerView.ViewHolder, TItem> : AdapterDelegate<TViewHolder>() {
+
+    override fun isForViewType(items: List<*>, adapterPosition: Int, collectionPosition: Int): Boolean {
+        return (collectionPosition >= 0
+                && collectionPosition < items.size
+                && isForViewType(items[collectionPosition]!!, adapterPosition, collectionPosition))
+    }
+
+    /**
+     * Returns if object is processable by this delegate.
+     * This item will be casted to [TItem] and passes to [.onBindViewHolder].
+     *
+     * @param item                  Item to check;
+     * @param adapterPosition       Position of item in adapter;
+     * @param collectionPosition    Position of item in collection that contains item;
+     * @return True if item is processable by this delegate.
+     */
+    open fun isForViewType(item: Any, adapterPosition: Int, collectionPosition: Int): Boolean {
+        return true
+    }
+
+    override fun getItemId(items: List<*>, adapterPosition: Int, collectionPosition: Int): Long =
+            getItemId(items[collectionPosition] as TItem, adapterPosition, collectionPosition)
+
+    /**
+     * Returns unique ID of item to support stable ID's logic of RecyclerView's adapter.
+     *
+     * @param item                 Item in adapter;
+     * @param adapterPosition      Position of item in adapter;
+     * @param collectionPosition   Position of item in collection that contains item;
+     * @return Unique item ID.
+     */
+    fun getItemId(item: TItem, adapterPosition: Int, collectionPosition: Int): Long = 0
+
+    override fun onBindViewHolder(
+            holder: RecyclerView.ViewHolder,
+            items: List<*>,
+            adapterPosition: Int,
+            collectionPosition: Int,
+            payloads: List<*>
+    ) {
+        onBindViewHolder(holder as TViewHolder, items[collectionPosition] as TItem, adapterPosition, collectionPosition, payloads)
+    }
+
+    /**
+     * Binds item with payloads to created by this object ViewHolder.
+     *
+     * @param holder               ViewHolder to bind item to;
+     * @param item                 Item in adapter;
+     * @param adapterPosition      Position of item in adapter;
+     * @param collectionPosition   Position of item in collection that contains item;
+     * @param payloads             Payloads;
+     */
+    abstract fun onBindViewHolder(
+            holder: TViewHolder,
+            item: TItem,
+            adapterPosition: Int,
+            collectionPosition: Int,
+            payloads: List<*>
+    )
+
+}

recyclerview-adapters/src/main/java/ru/touchin/adapters/OffsetAdapterUpdateCallback.kt → recyclerview-adapters/src/main/java/ru/touchin/roboswag/recyclerview_adapters/OffsetAdapterUpdateCallback.kt

@@ -1,4 +1,4 @@
-package ru.touchin.adapters
+package ru.touchin.roboswag.recyclerview_adapters
 
 import androidx.recyclerview.widget.ListUpdateCallback
 import androidx.recyclerview.widget.RecyclerView